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Fair Value Measurements (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative, Notional Amount $ 1,730.0 $ 2,610.0    
Fair value of long-term debt 325.1 687.2    
Long-term debt, net of debt issuance costs 341.5 395.6    
Investments, Fair Value Disclosure 786.7 639.6 $ 537.7 $ 340.3
Foreign currency forward contracts, net notional value 1,100.0 1,510.0    
Deferred compensation plan, contra-equity, shares held in trust 5.1 5.2    
Long-term Debt, Current Maturities 0.0 274.7    
Long-term senior notes, 4.4%, due November 2022 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Unamortized Debt Issuance Expense 0.0 0.3    
Foreign Exchange Contract [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset, Fair Value, Gross Asset 16.9 19.2    
Derivative Asset, Fair Value, Gross Liability 2.8 3.3    
Derivative Liability, Fair Value, Gross Asset 0.2 0.2    
Derivative Liability, Fair Value, Gross Liability 34.9 1.0    
Long-Term Senior Notes [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Unamortized Debt Issuance Expense 1.3 1.4    
Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investments, Fair Value Disclosure 279.5 251.6    
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investments, Fair Value Disclosure 0.0 0.0    
Foreign currency forward contract, current asset amount 14.1 15.9    
Foreign currency forward contract, current liability amount 34.7 0.8    
Deferred compensation plan assets 520.2 528.8    
Deferred compensation plan liabilities $ 477.2 $ 513.0